Bonjour,
après avoir parcourue les différent sujet et essayé des commandes, je créé se sujet pour demander votre aide car ma connexion wifi fonctionne pendant quelque seconde puis se coupe. Voici le petit rapport:
>> cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04.2 LTS"
>> lsusb
Bus 002 Device 004: ID 174f:1173 Syntek
Bus 002 Device 003: ID 0bda:0821 Realtek Semiconductor Corp.
Bus 002 Device 002: ID 0438:7900 Advanced Micro Devices, Inc.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
Bus 001 Device 002: ID 0438:7900 Advanced Micro Devices, Inc.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
>> lspci -k -nn | grep -A 3 -i net
02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8821AE 802.11ac PCIe Wireless Network Adapter [10ec:8821]
Subsystem: Lenovo RTL8821AE 802.11ac PCIe Wireless Network Adapter [17aa:a814]
Kernel driver in use: rtl8821ae
Kernel modules: rtl8821ae
03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [10ec:8136] (rev 07)
Subsystem: Lenovo RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [17aa:381e]
Kernel driver in use: r8169
Kernel modules: r8169
>> sudo lshw -C network
*-network
description: Interface réseau sans fil
produit: RTL8821AE 802.11ac PCIe Wireless Network Adapter
fabriquant: Realtek Semiconductor Co., Ltd.
identifiant matériel: 0
information bus: pci@0000:02:00.0
nom logique: wlp2s0
version: 00
numéro de série: c8:3d:d4:73:5a:3f
bits: 64 bits
horloge: 33MHz
fonctionnalités: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtl8821ae driverversion=4.8.0-53-generic firmware=N/A ip=192.168.1.100 latency=0 link=yes multicast=yes wireless=IEEE 802.11
ressources: irq:47 portE/S:2000(taille=256) mémoire:f0c00000-f0c03fff
*-network
description: Ethernet interface
produit: RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
fabriquant: Realtek Semiconductor Co., Ltd.
identifiant matériel: 0
information bus: pci@0000:03:00.0
nom logique: enp3s0
version: 07
numéro de série: c8:5b:76:a7:94:c3
taille: 100Mbit/s
capacité: 100Mbit/s
bits: 64 bits
horloge: 33MHz
fonctionnalités: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8106e-1_0.0.1 06/29/12 ip=192.168.1.41 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
ressources: irq:36 portE/S:1000(taille=256) mémoire:f0b00000-f0b00fff mémoire:f0800000-f0803fff
>> lsmod
Module Size Used by
rfcomm 77824 0
ccm 20480 1
bnep 20480 2
rtsx_usb_ms 20480 0
memstick 20480 1 rtsx_usb_ms
uvcvideo 90112 0
videobuf2_vmalloc 16384 1 uvcvideo
videobuf2_memops 16384 1 videobuf2_vmalloc
videobuf2_v4l2 24576 1 uvcvideo
videobuf2_core 40960 2 uvcvideo,videobuf2_v4l2
videodev 180224 3 uvcvideo,videobuf2_core,videobuf2_v4l2
snd_hda_codec_realtek 86016 1
arc4 16384 2
media 40960 2 uvcvideo,videodev
snd_hda_codec_generic 73728 1 snd_hda_codec_realtek
rtl8821ae 225280 0
snd_hda_codec_hdmi 45056 1
snd_hda_intel 36864 5
snd_hda_codec 135168 4 snd_hda_intel,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_codec_realtek
btcoexist 53248 1 rtl8821ae
rtl_pci 28672 1 rtl8821ae
snd_hda_core 86016 5 snd_hda_intel,snd_hda_codec,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_codec_realtek
rtlwifi 77824 2 rtl_pci,rtl8821ae
mac80211 761856 3 rtl_pci,rtlwifi,rtl8821ae
snd_hwdep 16384 1 snd_hda_codec
btusb 45056 0
kvm 598016 0
snd_pcm 110592 4 snd_hda_intel,snd_hda_codec,snd_hda_core,snd_hda_codec_hdmi
btrtl 16384 1 btusb
snd_seq_midi 16384 0
snd_seq_midi_event 16384 1 snd_seq_midi
snd_rawmidi 32768 1 snd_seq_midi
snd_seq 69632 2 snd_seq_midi_event,snd_seq_midi
btbcm 16384 1 btusb
irqbypass 16384 1 kvm
btintel 16384 1 btusb
snd_seq_device 16384 3 snd_seq,snd_rawmidi,snd_seq_midi
crct10dif_pclmul 16384 0
snd_timer 32768 2 snd_seq,snd_pcm
cfg80211 581632 2 mac80211,rtlwifi
crc32_pclmul 16384 0
ghash_clmulni_intel 16384 0
bluetooth 557056 31 btrtl,btintel,bnep,btbcm,rfcomm,btusb
aesni_intel 167936 2
snd 86016 21 snd_hda_intel,snd_hwdep,snd_seq,snd_hda_codec,snd_timer,snd_rawmidi,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_seq_device,snd_hda_codec_realtek,snd_pcm
aes_x86_64 20480 1 aesni_intel
lrw 16384 1 aesni_intel
glue_helper 16384 1 aesni_intel
ablk_helper 16384 1 aesni_intel
cryptd 24576 3 ablk_helper,ghash_clmulni_intel,aesni_intel
joydev 20480 0
input_leds 16384 0
soundcore 16384 1 snd
fam15h_power 16384 0
serio_raw 16384 0
shpchp 36864 0
i2c_piix4 24576 0
acpi_als 16384 0
k10temp 16384 0
ccp 45056 0
ideapad_laptop 24576 0
kfifo_buf 16384 1 acpi_als
sparse_keymap 16384 1 ideapad_laptop
wmi 16384 1 ideapad_laptop
industrialio 65536 2 acpi_als,kfifo_buf
mac_hid 16384 0
tpm_crb 16384 0
parport_pc 32768 0
ppdev 20480 0
lp 20480 0
parport 49152 3 lp,parport_pc,ppdev
autofs4 40960 2
rtsx_usb_sdmmc 28672 0
rtsx_usb 24576 2 rtsx_usb_sdmmc,rtsx_usb_ms
amdkfd 139264 2
amd_iommu_v2 20480 1 amdkfd
radeon 1515520 69
i2c_algo_bit 16384 1 radeon
ttm 102400 1 radeon
psmouse 139264 0
drm_kms_helper 167936 1 radeon
syscopyarea 16384 1 drm_kms_helper
sysfillrect 16384 1 drm_kms_helper
sysimgblt 16384 1 drm_kms_helper
fb_sys_fops 16384 1 drm_kms_helper
ahci 36864 3
drm 368640 7 radeon,ttm,drm_kms_helper
libahci 32768 1 ahci
r8169 81920 0
mii 16384 1 r8169
video 40960 1 ideapad_laptop
fjes 28672 0
>> iwconfig
wlp2s0 IEEE 802.11 ESSID:"SFR_E8F8"
Mode:Managed Frequency:2.462 GHz Access Point: E0:A1:D7:3D:E8:FC
Bit Rate=72.2 Mb/s Tx-Power=20 dBm
Retry short limit:7 RTS thr=2347 B Fragment thr:off
Power Management:off
Link Quality=70/70 Signal level=-36 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:34 Missed beacon:0
>> ifconfig -a
enp3s0 Link encap:Ethernet HWaddr c8:5b:76:a7:94:c3
inet adr:192.168.1.41 Bcast:192.168.1.255 Masque:255.255.255.0
adr inet6: fe80::f848:4c20:1f65:b52b/64 Scope:Lien
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Packets reçus:3903 erreurs:0 :0 overruns:0 frame:0
TX packets:2919 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:1000
Octets reçus:3888980 (3.8 MB) Octets transmis:321934 (321.9 KB)
lo Link encap:Boucle locale
inet adr:127.0.0.1 Masque:255.0.0.0
adr inet6: ::1/128 Scope:Hôte
UP LOOPBACK RUNNING MTU:65536 Metric:1
Packets reçus:767 erreurs:0 :0 overruns:0 frame:0
TX packets:767 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:1
Octets reçus:66427 (66.4 KB) Octets transmis:66427 (66.4 KB)
wlp2s0 Link encap:Ethernet HWaddr c8:3d:d4:73:5a:3f
inet adr:192.168.1.100 Bcast:192.168.1.255 Masque:255.255.255.0
adr inet6: fe80::58b7:1036:6e22:bb56/64 Scope:Lien
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Packets reçus:2686 erreurs:0 :0 overruns:0 frame:0
TX packets:1890 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:1000
Octets reçus:1983048 (1.9 MB) Octets transmis:311533 (311.5 KB)
>> sudo iwlist scan
>> uname -r -m
4.8.0-53-generic x86_64
>> cat /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
>> nm-tool
>> nmcli dev wifi
* SSID MODE CHAN DÉBIT SIGNAL BARS SÉCURITÉ
SFR WiFi FON Infra 11 54 Mo/s 100 ▂▄▆█ --
SFR WiFi Mobile Infra 11 54 Mo/s 100 ▂▄▆█ WPA2 802.1X
orange Infra 1 54 Mo/s 94 ▂▄▆█ --
Livebox-21B0 Infra 1 54 Mo/s 90 ▂▄▆█ WPA2
* SFR_E8F8 Infra 11 54 Mo/s 84 ▂▄▆█ WPA1
Livebox-21B0 Infra 64 54 Mo/s 74 ▂▄▆_ WPA2
orange Infra 1 54 Mo/s 50 ▂▄__ --
HP-Print-2D-Photosmart 5520 Infra 6 54 Mo/s 50 ▂▄__ --
Livebox-60B6 Infra 1 54 Mo/s 47 ▂▄__ WPA2
-- Infra 11 54 Mo/s 44 ▂▄__ WPA2
Bbox-ACA1B350 Infra 11 54 Mo/s 40 ▂▄__ WPA1 WPA2
>> nmcli connection show
NOM UUID TYPE PÉRIPHÉRIQUE
Connexion filaire 1 a1c95d02-c2b1-3cbb-83f6-b43ebc1fe137 802-3-ethernet enp3s0
SFR_E8F8 5c358bcb-c280-4406-9482-c91455bb9f0c 802-11-wireless wlp2s0
FreeWifi 2d4a1ba2-da79-4583-8445-14268983b1d0 802-11-wireless --
My ASUS 1421163e-00bb-4b23-b254-da8d4a850ba3 802-11-wireless --
SFR-96d8 422c7ee5-a1c1-455a-ae4c-635cf94d6a55 802-11-wireless --
>> sudo rfkill list
0: ideapad_wlan: Wireless LAN
Soft blocked: no
Hard blocked: no
1: ideapad_bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
2: hci0: Bluetooth
Soft blocked: yes
Hard blocked: no
3: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
En espérant pouvoir retrouver ma connection au plus vite 🙂